1242451433 has 4 divisors (see below), whose sum is σ = 1253850180. Its totient is φ = 1231052688.

The previous prime is 1242451429. The next prime is 1242451451. The reversal of 1242451433 is 3341542421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 860366224 + 382085209 = 29332^2 + 19547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242451433 - 2² = 1242451429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242451396 and 1242451405.

It is not an unprimeable number, because it can be changed into a prime (1242451333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5699210 + ... + 5699427.

It is an arithmetic number, because the mean of its divisors is an integer number (313462545).

Almost surely, 2^1242451433 is an apocalyptic number.

It is an amenable number.

1242451433 is a deficient number, since it is larger than the sum of its proper divisors (11398747).

1242451433 is a wasteful number, since it uses less digits than its factorization.

1242451433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11398746.

The product of its digits is 11520, while the sum is 29.

The square root of 1242451433 is about 35248.4245463538. The cubic root of 1242451433 is about 1075.0445795106.

Adding to 1242451433 its reverse (3341542421), we get a palindrome (4583993854).

The spelling of 1242451433 in words is "one billion, two hundred forty-two million, four hundred fifty-one thousand, four hundred thirty-three".